Attachment-plug receptacle



-July 6,1926. r I 1,591,772

A. H. NERO ATTACHMENT PLUG RECEPTACLE File} June 9,; 1921 23's! A J lNVENTOR ATTORNEYS.

Patented Jul 6,1926.

UNITED STATES PATENT oFFicE,

ARV'ID H. NEED, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE ARROW ELEC- TRIO COMPANY, OF HARTFORD, CONNECTQICUT, A CORPORATION OF CONNECTICUT.

ATTACHMENT-PLUG nncnr'recnn.

Application filed June 9,

My invention relates to attachment plug receptacles, and particularly to the construction and support of the jack-receiving ter-' minals, and the associated construction of the insulating body of the receptacle and its support. In the accompanying drawings Fig, 1 is a Ian of a receptacle in which my invention 1s embodied in one form; .Fig. 2 is a longitudinal section on the line 2 2, Fig. 1;

Fig. 3 is a broken inverted plan of a re ceptacle; w

Fig. 4 is a plan viewof a blank from which one of the terminals is,.formed; and Fig. 5 is a perspective of one of the terminals detached.

In the form shown in Figs. 1 to 5, the present receptacle comprises a one-piece insulating base provided with a circular upstanding boss 11 which .is accommodated in a circular recess in the face plate 12 and is provided, as usual, with suitable T-shaped apertures 13 and 14 for the admission of the jack blades of a cooperating plug (not shown) whiche'ngage the receptacle termi-. nals hereinafter described. 1 The, insulating base is laterally channeled at 15 and 16 to accommodate the leading-in wires, respectively connected to the binding screw terminals 17 and 18 which rest on depressed ledges 19 and 20 respectively. Supporting lugs 21 and 22, by which the receptacle may .be mounted in the customary fashion in the outlet box (not shown), rest in,depressions 23 and 24 at opposite endsof the receptacle and are engaged by screw bolts 25 and'26 which pierce the base.

The receptacle terminals, which are identical in form, are illustrated in detail in J Figs. 4 and 5. As indicated, each terminal .is formed from a single "blankand comprises a connection strap 27 pierced at 28 to receive the screwbolt 29 which passes therethrough and takes into one or the other of,

the binding screw terminals 18 or 19, thus establishing electrical connection between these parts, as well as mechanically securing the samev in position on the base. Each .terminal'also comprises brushes 30, 31, and

32, lying at right angles to each other in brush 32, so that when the several brushes 1921..- Serial at. 476,263.

hand, while the brush 31 and the wing 335 are opposed on the other hand .but lie in a plane at right angles to that of the firstmentioned pair. VVhen the contact is properly located in itg recess 34, let into the lower face of the base, the; brushes 30 and. 32 for the respective terminals receive a jack L blade passing through the head of the T- slot 13 or 14, while the brushes 31 and brush wing 33 receive the jack blade passing through the stem of the T-slot.' The recep tacle contacts are thus designed to accommodate plug jacks arranged either in tandem or parallel, or at right angles to each other. Moreover, b making the T-slot 14 of less size than t e T-slot 13 the receptacle is polarized. It may be pointed out that in whichever position the jack blade entersthe receptacle, it contacts on one face with either the brush 30 or the brush 31, and on v I the other face with either the brush 32 or the wing 33. In both positions, therefore, a good wiping contact with both faces of the jackyblade is secured, and an excellent electrical connection therewith obtained.

A "lug 35 in extension of the strap 27 is, accommodated in a shallow recess 36 in the base 10 and properly locates the terminal with respect to the T-slot apertures 13 and 14 in thebase. It also serves to detain the receptacle contacts in position against the outward drag of the jack bladeson the withdrawal of the plug.

In order to support the terminals in their respective wells 34, I provide a metal plate 37 underlying both receptacle terminals, but insulated therefrom by an interposed sheet 38 of insulation, such as fiber", mica, or the like, upon which the terminals rest. The screws'25 and 26 pass through opposite ends of the plate and support it in position.

I This construction has the additional advantage that the screws 25 and 26 are definitely located a predetermined distance apart, regardless of variations in length of the I single supporting terminals. As

porcelain l and the supporting lugs 21 thought, which is to provide areceptaclev of economical construction, in which the central exposed boss 11 is maintained free from other perforations than are required for the accommodation of the plug jacks; second, to provide improved one-piece terminals; third, to provide underlying supports for the terminals, and preferably a late insulated from the be noted in the construction shown in Figs. 1 to 5, only two screws are required at each end of the receptacle, one for connection with the binding screw terminals, and the other engaging the holding lug and supporting plate, thus economizing not only in the material but in the labor of assembly. It may be pointed out that the particular terminal construction shown in Figs. 4 and 5 may be readily adapted to attachment plug receptacles of other types, such for instance as separable attachment plugs, and I do not limit my invention of this feature to a flush receptacle of the type shownI I claim 1. An attachment plug receptacle comprising a one-piece insulating body recessed from its lower face to afford a plurality of contact chambers and a rtured in its outer face to form blade-gui e passages opening to said contact chambers, wok-receiving contacts of opposite polarity respectively housed within said chambers in register with said guide passages, in combination with insulating sheet material underlying said contacts of opposite polarity, anda sheet metal plate secured to the body and underlying said insulating sheet material and cooperating mg sheet material underlyingsaid contacts of opposite larity and a sheet metal plate to the body and underlying said insulating sheet material and cooperating with the latter to support said contacts in said withface to. form blade-guide passages opening 10 to said contact chambers, jack-receiving contacts of opposite polarity respectively housed within said chambers in register with said guide passages, in combination with insulating sheet material underlying said contacts of opposite polarity, and a sheet metal plate secured to the body and underlying said insulating sheet material and cooperating with the latter to su port said contacts in said chambers, said s eet metal plate and insulating sheet material being confined within the boundaries of the lower face of the base together with receptacle mounting means metallically connected with said underlying .0

plate.

4. An attachment plug receptacle com rising a one-piece insulating body recessed in its lower face to afford .a plurality of contact chambers and apertures in its outer face to form blade-guide passages opening to said contact chambers, ack-receivmg con-. tacts of opposite polarity respectively housed within said chambers in register with said guide passages, in combination with insulat ing sheet material underlying said contacts 1 of opposite polarity, and a sheet metal plate secured to the body and underlying said insulating sheet material and cooperating with the latter to support said contacts in said chambers, and receptacle supporting lugs 1 engaged by the means which secure the sheet metal plate to the insulating body,

5. An attachment plug receptacle com rising a one-piece insulating body recesed rom its lower face to afford a plurality of contact chambers and apertured in its outer face to form blade-guide passages opening to said contact chambers, 1ack-recei con tacts of opposite polarity respectively oused within said chambers in register with said 1 guide passages, in combination with insulating sheet material underlying said contacts of opposite polarity, anda sheet-metal plate secured to the body and underlying said insulating sheet material and cooperating with 1 the'latter to support said contacts in said chambers, said insulating sheet material and sheet metal late being substantially coextensive toget er 'with receptacle mounting means metallically connected with said underlying plate.

6. An attachment plug receptacle comprising a onespiece insulatin body recessed from its lower face to'aflor a plurality of contactcha'mbers and apertured in its outer face to .form blade-guide passages opening to said contact chambers, jack-receivlng contacts of opposite polarity respectively housed within said chambers 1n with said guide-passages, in combination with insulating sheet material underlying "said contacts ofv opposite polarit and a sheet metal plate secured to the and cooperating with the latter to support said contacts in said chambers, said contacts having laterally extendin -base members pressed against the base y said supporting members beyond the boundaries of the, contact chambers together with receptacle mountin' means metallically connected with said underlying plate. 7

7. An attachment plug receptacle domprising a one-piece insulating body recessed from'its lower face to afiord a plurality of contact chambers and apertured in its outer face to form blade-guide passages opening to said contact chambers, jack-receiving contacts of opposite polarity respectively housed within said chambers in register with said .guide passages, in combination with insulating sheet material underlyingsaid con tacts of opposite polarity, and a sheet metal platesecured to the body and underlying said insulating sheet material and cooperating with the latter to support said contacts in said chambers, each of said contacts having base members extending'on different sides of its contact chamber and pressed against the lower faceof the base by said v porting plate underlying said contacts and cle mounting means metallically to said plate-securing means.

common thereto, means for insulat' said plate from said contacts, and means or securing said plate to said body in contactsupporting position, together with receptaconnected 9. -In an attachment plug receptacle, a molded insulating body recessed from its lower face to afiord a contact chamber, and.

acne-piece contact entering said chamber from the lower-face of the body, the base of said contact having a laterally extending integral branch for electrical connection with a source of current and an integrallug extending in another, directionfrom said base and underlying the receptacle bod to detain the contact against outward tdispl zices ody and underlying said insulating sheet material ment under the frictional drag of a cooperating jackblade on withdrawal of the latter., v

10. A push plug receptacle -comprisinga one-piece molded insulating body recessed from its lower face to accommodate contacts, contacts of opposite polarity insertable from said lower face into the recessed body andihaving laterally extending base elements resting against the lower face of the body, wire terminals associated with-said base elements of the contacts and accommo;

dated by said body, sheet insulation underlying the contacts and their base elements to support and house the same, means forsecuring said sheet insulation to the body, to gether with mounting means at opposite ends of the body for securing the same to a suitable support. 11. A'pu'sh one-piece molded insulating body recessed from its lower face to accommodate contacts,-contacts of opposite polarity insertable from said lower face into the recessed body and having laterally extending base elements resting against the lower face of .the body, wire terminals associated with said base elements of the contacts and accommodated by said body, a punched metal elements, sheet insulation interposed between said plate andthe contact elements,

plug receptacle comprising ,a

'plate underlying the contactsand their base means for securing the plate and sheet insulation to the body, together withdmounting means at opposite ends of the body for securing the same in a suitable su port,

12.tAn attachment plug receptac e comrising a molded insulating body recessed rom its lower face to accommodate contacts, contacts insertable 'from said lower erally extending base elements, sheet insulation underlying said contacts and their laterally extending base elements 'to support the same, receptacle mounting means at the face of the'receptacle, and meanscommon to said receptacle mounting means and sheet insulation for securing the same to the receptacle body. 7

a 13. An attachment plug receptacle com.- prising a molded insulating body recessed from its lower face to accommodate contacts, contacts insertable from said lower face into the recessed body and having laterally extending base elements, sheet insulation underlying said contacts and their laterally extending base elements to support the same, a punched metal member beneath and "reinforcing said sheet insulation,

receptacle mounting means metallically connected to said punched metal member, sald punched metal'member being secured tothe insulating base to support the sheet insulation and'receptacle contacts in position.

14'. In an attachment plug receptacle de- 105 face into the recessed body and having latvice, a one-piece contact having two brushes lying substantially at right angles to each other, in combination with a cooperating brush member having brush portions ofi'set at right angles to each other to respectively face the first-mentioned brushes.

15. In an attachment plug receptacle de vice, a contact comprising brushes lying at right angles to each other, and a cooperating brush having portions offset at right angles to each other to face respectively the firstmentioned brushes.

In testimony whereof I have signed my name to this specification.

ARVID H. NERO. 

